Description
A motorised zone valve consists of a spring-return actuator that is attached to a 2-port or 3-port valve body. When power is applied, a synchronous motor inside the actuator winds the spring and moves the valve paddle to a desired position. When power is off, the spring returns the paddle to its initial position. It is designed for cycling (not constantly powered on) applications and is typically used in heating and air-conditioning systems to control the flow of hot or chilled water, such as fan coil units, baseboards or other closed loop hydronic systems, but is not suitable for open loop systems where there is exposure to fresh air, which will result in damage to the rubber seal inside the valve by dissolved oxygen. Motor Running Time: Power On: 10-15 seconds Spring Return: 4-5 seconds Materials: Valve Body: forged brass Stem: brass with nickel-plated Seals: EPDM/NBR Housing: stainless steel base with AluminumStatic Pressure: 20 BarMedium: water or glycol (up to 50%) Medium temperature: 0-90 °CAmbient Temperature: 0-50 °CHumidity: 5% to 95% non-condensing